Movable contact for electric switches.



J. G. PETERSON.

MOVABLE GONTACT FOR ELECTRIC SWITCHES.

APPLICATION PILEDYJAN. 11, 1909.

922,033., Patented May 18,1909.

, r an s rrrrns; rare N I OHANN G. PETERSON, F HARTFORD, CONNECTICUT, ASS IC NOR TO THE ARROW ELECTRIC COMPANY. OF HARTFORD, (ONNE(ITI(.U'l, A ("ORPORATION OF ("ONNEC PICUF.

MOVABLE CON'IAC'IFFOR ELEGTRIC SWITCHES.

Specification of Letters Patent.

Patented vMay 18, 1909.

Application filed January 11, 1909. Serial No 471,530.

To all whom it may concern:

Be it known that I, JOHANN G. lmnnsox, a citizen of the United States, residing at Hartford, in the county of Hartford and State of Connecticut. have invented new and useful Movable Contacts for Electric Switches, of which the following is aspecititration.

This invention relates to the construction of movable contacts for doublepole rotary snap electric switches.

The object of the invention is to provide a construction, having parts which are simple and cheap to n'ianutacture. and. assemble, which produces a strong,'safe and etticient unit'rcady to be applied to the operating mechanism of a double pole switch of the above mentioned character.

Figure 1 of the drawings shows a side elevation of the contact plates and-supports,

for adouble pole rotary snap electric switch,-

constructed according to this invention. Fig. 2 shows a plan of the same. Fig. 3 shows a bottom view. F ig. t shows a side .view of the lower supporting plate. Fig. 5

shows an edge View of the lower supporting plate. 7 Fig. 6 shows a plan. of the lower supporting plate. Fig. 'Z'shows a side i iew of the upper supporting plate. Fig. 8 shows an edge view of the upper supporting plate. Fig.9 shows a plan of the upper supporting plate. Fig. 10 shows an edge view of a; modified form of upper supporting plate. Fig". 11 shows a side View of the same. Fig. 12 shows a plan of the same. Fig; 13 shows a plan of a lower supporting plate which is used with the upper supporting plate'of modified form. Fig. 14 shows view of the modified form. of upper supporting plate with singleplate contactsi'nountcd thereon;

The lower supporting plate 1 of the first.

referably bent intecontact platesare electrically insulated from Extending upwardly the edges .iatnetrically opposite the lugs by washers T, of any suitable insu lating' material.

Mounted on the upper ends of the lugs] above; the lower cont-act plates and insulating' washers, is a-supporting plate 5 This supporting plate has perforations 9 which receive the'upper ends of the. lugs that are headed over on the top of the upper surface after the plate has been placed in position, and a central opening 10, whichv spans the actuating mechanism. Projecting upwardly.

from this plate and preferably bent integral from the edges, diametrically opposite and equal distances from the center are lugs 11..

which have shoulders 12. Mounted on-these lugs and supported by' the shoulders are a pair of yielding contact plates 13, desirably made of spring bronze. These contact plates are electrically insulated from the lugs by washers 14; of-any suitable insulating'material. Above the upper insulating. washers are desirably placed metallic washers 15,

over which the ends' and the lugs of the' upper supporting plate are headed. The.

perforations in the upper supporting late for receiving the ends of-the lugs ot the lower plate, are so arranged that when the upper contact plates are mounted on the lugs ot' the upper supporting plate the upper contact'plates will extend at right angles to-the lower contact plates, which are mounted-on the lugs of the lower supporting plate.

In the second form of the invention illustrated the upper plate 16 has shouldered lugs 17 projecting upwardly and shouldered lugs 18 projecting downwardly. These lugs are preferably bent from the edges of the' plate at equal'distlu'ices from the axis, the upper being; diametrically opposite each other, .and the. lower being diametricall opposite each other, but-the upperand ower other. With this form of plate the upper yielding contacts are mounted on the upwardly projecting lugs and the lower yield- 1 lIlfI contacts are mounted on the downwardly projecting lugs, and suitably insulated, and then the. downwardly projecting lugs are. inserted in perforations 19 in the lower supporting" plate 20 andheadcd over.

\Vhile it is preferred, as above described, .to use double spring contact plates, single plates 21 may, be mounted u on and insulated from the lugs, as illustrate in Fig. 14:.

'being arranged at degrees from each I The construction herein described pro- ,froin tho-upper supporting plate, contact piates mounted on the lugs that connect the supporting plates, and Contact plates extending,- at right angles to the other Contact plates, mounted on the lugs projecting from the upper supporting plate. I

2. A movable cont-not for electric switches having a supporting plate, lugs projecting upwardly from. the supporting plate, yielding t-onluct plates mounted on said it. gs, 22. supporting plate mounted on said lugs above llio contact plates, lugs projecting from 'tliie lent mentioned supporting plate, (1 yield ing contact plates mounted on the lugs projecting from said last mentioned supporting plate.

3. A movable Contact for electric s'witclu-js having two supporting plates, lugs extending; between and connecting the snpportil'ig plates, and lugs projecting upwardly from one of said supporting plates, Contact plates mounted on the lugs between the, supporting plates and on the lugs p ectin upwardq; from one of sai'cl. supporting plat JOHANN G. PETE; N

Witnesses JOSEPHINE M. Srxunvrrrnn, HARRY R. WILLMMS. 

